Alabama offensive tackle Cyrus Kouandjio entered the 2013 college football season as one of the early favorites to establish himself worthy of the No. 1 pick in the 2014 NFL Draft, but he failed to live up to the expectations and is now considered a borderline first-round pick.

Along with the disappointing season on the field, there are some medical red flags that have teams concerned, and ESPN draft analyst Mel Kiper Jr. believes Kouandjio is the biggest question mark among the offensive and defensive lineman prospects in this year's draft.

"For one, there are questions about how well he'll hold up physically, particularly with his knees, and his injury history isn't completely clean," Kiper wrote in his column.

"Secondly, he didn't really take a step forward in performance this season, with some sloppiness in his technique, and I'd say his run blocking is ahead of his pass blocking at this point. He was once a first-round lock, but if he goes there now, I'd call it a bit of a risk."

If Kouandjio can eventually push past his injury concerns to live up to the talent he showed early during his career with the Crimson Tide, he will be a steal late in the first round or early in the second.